Carbureter attachment.



H. A. MILLER. CARBURBTER ATTACHMENT. APPLICATION FILED APR.18,1910.

Patented Jan. 9, 1912.

Mm a@ .iff-To all tvhom 'it may concern' feaizen of the United StatesUNi Vsrefrnfs ArnN'r OFFICE.

HAR-RY A. MILLER, OF LOS- ANGELES, CALIFORNIA.

CARBURETER ATTACHMENT.

Specification of Letters Patent.

Patented Jan. 9,1912.

Application led April 18, 1910. Serial No. 556,253.

Be it known that I, HARRY A. MLLER, a residing at Los l -Angeles, countyof 'Los Angeles, State of 5. California, have inventeda new and usefulCarbureter Attachment, of which the follovving is a specification.

This invention relates to a device which is adapted to be attached-to acarbureter to secure economy in fuel.

InI starting the engine it is desirable to -restrict the airy opening sothat-the mixture Will be comparatively rich, and after start 'ing use aless rich mixture which is accomllplished by admitting auxiliary aircontrolled by Van air inlet valve.

My invention providesA means for regu-v lating the auxiliary ai1--inletvalve means whereby it will be restrainedfrom'opening and vafter havingbeen opened, will not receive any reactive pressure tending to close itexcept its normal closing tendency. One obj-ect of the present inventionis to provide a controlling means for the said airA valve which Willretard its opening by -me'- vertical lon itudinal section through avcaris an enlarged section on line :eL-m2 Fig. 1. Fig. 3 is a'sectionOnline .mL-w3 Fig. 2. "Fig. 4 is-an enlarged elevation of a Washer. Fig.5 is a perspective view of the ratchet and friction disks.

1 designates the mixing chamber of the carbureter into which gasolene isadmitted from the nozzle 2, air being admitted to the mixing chamberlthrough the conical lower end 3 of the carbureter. The entrance of airto the vcarbureter is controlled by an air inlety valve which consistsof a 4.series of Wings 4 pivoted so that they can swing upwardly intothe position shown 1n'V dottedv lines in Fig. lwhen the suction 1sproduced within the mixing chamber. The detalled construction of thesewings and other parts bureter equlpped with the device. Fig. 2'

proper are clearly shown a previous application of of the Qcarbureterand described in .mme,` Serial' No. 528,40@ filed" November 16th, 1909.'The Wings 4 are so constructed that aA spacers formed around the nozzle2 when the wings 4 are in their lower position, the space forming whatmay be callec'.l

the normal air opening, which permits air to pass into thecarbureter'when the `Wings are closed, for use 1n startmg or at very lowspeeds One ofthe wingsjli is provided With" anarm G'Which` is tilted bythe Wingy vWhenever the Wing moves,the .arm` being preferably' rigidlyconnected with the Wing. In order to retard the opening movement of theWings,lI employ a frictionaldevice which conslsts of a ratchet Wheel 7which is rotatable on a stationary shaft 8. which is fixed to a plate 9the latter being secured tohthe side Wall of the carbureter,.or any oter-,con'venientl point of the c'arbureter.V

The ratchet 7 is provided'v'ith'ahub. 10 on A 'one side and a hub 11 onthe other side. A

Washer 12- which isfree'to revolve on the shaft '8 lies againstthehub11. A Washer 13, having a st-raightportion 14 in its bore whichengageswith a flat -face 15 formed on the shaftI 8,' lies next to theWasher 12v and `the flat face 15 prevents the washer 13 from turning.

16 is a nut screwedon the shaft. 8,.Which forces the Washer 13 againstthe .Washer 412, and thef latter againstthe hub 11, and by adjusting thenut' 16 friction4 may beregulated.V The Washerc13 beingnon-revoluble,prevents the nut 16 fromaccidentally unscrewing. A

A hollow casing 17 is mounted to rock on lthe respective hubs 10 and.11, and `Within the casing 1T is 'a pawl 18, one ,end of which ispivoted to the casing 17 and the. other end is spring pressed againsttheratchet 7 by a flat spring' 19., A link 2O at its upper end isconnected to a lug. 21.011 'casing-.17 andren its.:` lower end 1sconnectedto the arm 6 before;

referred to.` .n

In operation, as the Wi] iaref/raised'by the suction, the arm Gisdepressed, which throughthe link :2Q-rocks the casing 17 so that thepavvl'lS'turns the ratchet 7. The turningmovement of the ratchet 'T isresisted by the friction of the washers and this is "'colnnlumcated tothe Wings el and they are thereby retarded in their opening action. Theresult is, that upon suddenly opening the throttle when` running atsloiv speed, to

increase the speed, the wings 4 are not sud'- denly lifted Vwide open bythe suction from the engine, as they would naturally-be, but

are retarded by the frictional resistance and 5 fcaused to movegradually into full open ponozzle. Without this device the carbureterhas to be adjusted so that more gasolene will be delivered at a suddenopening of the throttle with the disadvantage that at high speed too'muchgasolene-isl delivered. It is y15. important to note thattheresistance acting to hold the Wings back occurs only during theopening movement of the Wings, and does not exist after the Wings areopened. Upon reducing the speed, the Wings 4 move by gravity towardtheir closed position, and

the arm 6 rises lifting'thel link A20 and rock'- ing the casing 17 i'nthe opposite direction and retracting the pawl 18 on the ratchet 7, thismovement being free and unimpeded by the ratchet so that nol friction isoffered to the closing movement of the Wings 4. Thus the device producesthe desired resistance to fthe opening movement of the Wings 4, and yetWhen the Wings have beenmoved to an .30 open'L positionthere is no extrapressure on them tending to return them, as would be the case if aspring or extra Weight were employed to retard the opening movement, forif a spring or Weight were employed for this purpose, its power would beexerted upon the 'Wings even when the Wings were onen,v tendingto closefthem, thereby reducing the air and enriching the mixture unduly,Whereas With my invention, when the Wings are open, the ratchet 7 doesnot exert any reactive force against thewings, tending to close them,and the mixture is not enriched beyond the desired point, therebysecuring economy.

` WhatI claim is: l

1. A carbureter provided'with an air, inlet valve and frictional meansfor restraining -only the. opening movement of the valve.

2.' In a carbureter provided With an air inlet valve, `a ratchet, a pawlfor operating said ratchet, means coperating with the. air 'valve foroperating said paWl during the opening movement f the air valve, and.frictional means for retar'ding the rotation of the ratchet. Y, f

3. In a carbureter provided with an air inlet valve, a shaft on thecarbureter, a

ratchet journaled on the shaft, a Washer in frictionalv contact withtheYV ratchet for restraining the turning of the ratchet, a nut foradjusting said Washer, said Washerhaving a hub projecting on each sidethereof, a casing journaledl on said hub, a paWl pivoted Within saidcasing and engaging the ratchet, an arm connected with the air inletvalve,A and a link from said arm to saidl casing. Y,

In testimony whereof, I have hereunto sait; my hand at LosAngelesCalifornia this 11th dayof April 1910.

HARRY A. MILLER. In presence of G. T. HAcKLml

